I chalked it up to being perimenopausal, but my flow only lasts maybe 2 days now. I've always been pretty regular and usually lasted about 5-7days. I did suffer from breast tenderness and sometimes headaches and mood swings, not bad (except for the mood swings) but noticeable - again maybe from peri-menapause. Those symptoms have all pretty much diminished. I've been paleo (about 95%) about a year now.